PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-15:57:40
G01     52.5           27.1               10.6 +/-   39.19      19.8 +/-   39.19  0.050 / 0.070
G06     177.0          23.7               13.0 +/-   38.68      26.3 +/-   38.68  0.050 / 0.060
G07     145.3          15.2               11.0 +/-   39.12      27.2 +/-   39.12  0.070 / 0.110
G11     45.2           17.0                3.5 +/-   15.29       8.3 +/-   15.29  0.060 / 0.100
G13     253.3          31.9               13.2 +/-   40.52      22.2 +/-   40.52  0.110 / 0.150
G15     288.9          15.2               11.5 +/-   41.97      28.5 +/-   41.97  0.180 / 0.200
G17     298.2          78.9                8.1 +/-    7.48       8.3 +/-    7.48  0.040 / 0.060
G19     240.9          54.5                9.1 +/-    5.12      10.9 +/-    5.12  0.050 / 0.050
G28     48.0           54.1               13.8 +/-   39.29      16.7 +/-   39.29  0.100 / 0.220
G30     148.6          45.2               13.3 +/-   40.10      17.8 +/-   40.10  0.120 / 0.260